Fuel dryer for biomass power plant

Abstract

The utility model relates to the technical field of biomass fuel processing, in particular to a fuel dryer for a biomass power plant, which can continuously and quantitatively feed, ensure the drying uniformity of biomass fuel and improve the drying effect. Comprising a drying box, a plurality of supporting legs, a discharging pipe, a feeding assembly, a heating assembly and a conveying assembly, the supporting legs are installed at the four corners of the bottom of the drying box, the discharging pipe is installed on the right side of the bottom of the drying box, the feeding assembly is installed on the left side of the top of the drying box, the heating assembly is installed in the drying box, and the conveying assembly is installed above the heating assembly.

Description

Technical Field

[0001] This utility model relates to the technical field of biomass fuel processing, and in particular to a biomass power plant fuel dryer. Background Technology

[0002] Biomass fuel refers to fuel made from burning biomass materials, primarily agricultural and forestry waste. It differs mainly from fossil fuels. The application of biomass fuel primarily involves biomass briquettes, which are produced by crushing, mixing, extruding, and drying agricultural and forestry waste into various shaped, directly combustible forms – a new type of clean fuel. Existing technology announcement CN107894145A discloses a biomass fuel dryer, including a drying chamber, resistance heating wire, insulation layer, metal shell, discharge port, inlet port, support column, support plate, support pillar, rotating motor, screw rod, limiting plate, and discharge hopper. The resistance heating wire is fixed in the middle of the outer wall of the drying chamber. During operation, the dryer heats the drying chamber through the resistance heating wire, drying the biomass fuel. The insulation layer not only prevents heat exchange between the drying chamber and the outside environment but also prevents heat transfer from the drying chamber to the metal shell, avoiding burns to workers and improving the safety of the dryer. However, when too much material is fed at once, the biomass fuel in the drying chamber will not dry evenly or completely, resulting in poor drying effect. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a biomass power plant fuel dryer that can continuously and quantitatively feed materials, ensure the uniformity of biomass fuel drying, and improve the drying effect.

[0004] This utility model discloses a biomass power plant fuel dryer, comprising a drying chamber, multiple support legs, a discharge pipe, a feeding assembly, a heating assembly, and a conveying assembly. Support legs are installed at the four corners of the bottom of the drying chamber, a discharge pipe is installed on the right side of the bottom of the drying chamber, and a feeding assembly is installed on the left side of the top of the drying chamber. The heating assembly is installed inside the drying chamber, and the conveying assembly is installed above the heating assembly. Biomass fuel is continuously and quantitatively added into the drying chamber through the feeding assembly, and the biomass fuel is pushed to circulate and be heated on the heating assembly by the conveying assembly, ensuring the uniformity of biomass fuel drying and improving the drying effect.

[0005] Preferably, the feeding assembly includes a feeding cylinder, a connecting seat, a feeding hopper, a conveying shaft, two spiral conveying blades, and a servo motor. The connecting seat is installed on the top left side of the drying chamber, and the feeding cylinder is installed on the top of the connecting seat. Feeding ports are symmetrically opened on the front and rear sides of the connecting seat. The feeding hopper is installed at the top feeding end of the feeding cylinder. The conveying shaft is rotatably installed inside the feeding cylinder. The input end of the conveying shaft is connected to the output end of the servo motor. Spiral conveying blades are symmetrically installed on the outer wall of the conveying shaft. Biomass fuel is added to the feeding hopper, and the servo motor is started to drive the conveying shaft to rotate. The conveying shaft drives the spiral conveying blades to rotate, pushing the biomass fuel to both ends of the feeding cylinder. It is continuously and quantitatively added into the drying chamber through the feeding ports to avoid excessive feeding at one time, which would affect the drying effect.

[0006] Preferably, the heating assembly includes multiple drying plates, multiple sets of heating plates, two sets of heating rods, and a temperature controller. The multiple drying plates are evenly arranged vertically inside the drying chamber. The middle of the drying plate is cylindrical, and a heating plate is installed inside the drying plate. Heating rods are installed at the front and rear ends of the bottom of the drying plate. The temperature controller is installed on the right side wall of the drying chamber. The upper drying plate has a discharge port on its right end, the middle drying plate has a second discharge port on its left end, and the bottom drying plate is connected to the input end of the discharge pipe on its right end. After the biomass fuel enters the drying chamber, it falls onto the surface of the drying plates. The temperature controller controls the heating plates and heating rods to raise the temperature and dry the biomass fuel. The biomass fuel is circulated and heated on the multiple drying plates through the discharge and second discharge ports to ensure the uniformity of the drying of the biomass fuel.

[0007] Preferably, the conveying assembly includes multiple rotating shafts, a drive wheel, two first spiral conveying blades, a second spiral conveying blade, a fixed plate, a reducer, a drive motor, a first double-position pulley, a second double-position pulley, and multiple transmission belts. The multiple rotating shafts are rotatably mounted in the middle of the drying plate. The drive wheel is mounted on the left end of the upper rotating shaft, and the first double-position pulley and the second double-position pulley are mounted on the right end of the lower rotating shaft, respectively. The reducer is mounted on the left side wall of the drying chamber via the fixed plate. The input end of the reducer is connected to the output end of the drive motor, and the output end of the reducer is connected to the input end of the drive wheel. The drive wheel and the first double-position pulley... The pulleys are connected by a transmission belt, and the first double-position pulley and the second double-position pulley are connected by a transmission belt. The outer walls of the upper and lower rotating shafts are equipped with first spiral conveying blades, and the outer wall of the middle rotating shaft is equipped with second spiral conveying blades. When the drive motor is started, it drives the drive wheel to rotate through the reducer. The drive wheel drives multiple rotating shafts to rotate synchronously through the first double-position pulley, the second double-position pulley, and the transmission belt. This causes the rotating shafts to drive the first and second spiral conveying blades to rotate, thus pushing the biomass fuel to circulate and ensuring the uniformity of drying and improving the drying quality.

[0008] Preferably, it also includes multiple second heating rods. The inside of the rotating shaft is hollow, and the right end of the rotating shaft is rotatably connected to the right inner wall of the drying box. The multiple second heating rods pass through the right side wall of the drying box and are located inside the rotating shaft. The second heating rods are electrically connected to the temperature controller. The second heating rods are activated to heat up the rotating shaft, thereby drying the biomass fuel during the conveying process and further improving the drying quality.

[0009] Preferably, it also includes a protective cover, with locking screws at both ends of the protective cover and locking screw holes on the left side wall of the drying oven; the protective cover is installed on the left side wall of the drying oven by the locking screws and locking screw holes to protect the first double-position pulley, the second double-position pulley and the transmission belt and ensure safety.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: biomass fuel is continuously and quantitatively added into the drying chamber through the feeding component, and the biomass fuel is pushed to circulate and be heated on the heating component through the conveying component, so as to ensure the uniformity of biomass fuel drying and improve the drying effect. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the isometric structure of this utility model;

[0013] Figure 3 This is a partial cross-sectional structural schematic diagram of the present invention;

[0014] Figure 4 This is a front cross-sectional structural diagram of the present invention;

[0015] Figure 5 This is a schematic diagram of the right-side cross-sectional structure of this utility model;

[0016] The attached diagram shows the following components: 1. Drying box; 2. Support leg; 3. Drying plate; 4. Heating plate; 5. Heating rod; 6. Temperature controller; 7. Rotating shaft; 8. Drive wheel; 9. First spiral conveyor blade; 10. Second spiral conveyor blade; 11. Fixed plate; 12. Reducer; 13. Drive motor; 14. First double-position pulley; 15. Second double-position pulley; 16. Transmission belt; 17. Protective cover; 18. Second heating rod; 19. Discharge pipe; 20. Feeding cylinder; 21. Connecting seat; 22. Feeding hopper; 23. Conveyor shaft; 24. Spiral conveyor blade; 25. Servo motor. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0018] like Figures 1 to 5 As shown, support legs 2 are installed at the four corners of the bottom of the drying chamber 1. A discharge pipe 19 is installed on the right side of the bottom of the drying chamber 1. A connecting seat 21 is installed on the left side of the top of the drying chamber 1. A feeding cylinder 20 is installed on the top of the connecting seat 21. Feed inlets are symmetrically opened on the front and back sides of the connecting seat 21. A feeding hopper 22 is installed at the top feeding end of the feeding cylinder 20. A conveying shaft 23 is rotatably installed inside the feeding cylinder 20. The input end of the conveying shaft 23 is connected to the output end of the servo motor 25. Spiral conveying blades 24 are symmetrically installed on the outer wall of the conveying shaft 23. Multiple drying plates 3 are evenly arranged inside the drying chamber 1. The middle part of the drying plate 3 is cylindrical, and a heating plate 4 is installed inside the drying plate 3. Heating rods 5 are installed at the front and back ends of the bottom of the drying plate 3. A temperature controller 6 is installed on the right side wall of the drying chamber 1. A discharge port is opened at the right end of the upper drying plate 3. A second discharge port is opened at the left end of the middle drying plate 3. The right end of the bottom drying plate 3 is connected to the input end of the discharge pipe 19. Multiple rotating shafts 7 are rotatably installed in the drying plates 3. The upper shaft 7 has a drive pulley 8 mounted on its left end, and the lower shaft 7 has a first double-position pulley 14 and a second double-position pulley 15 mounted on its right end. A reducer 12 is mounted on the left side wall of the drying chamber 1 via a fixing plate 11. The input end of the reducer 12 is connected to the output end of the drive motor 13, and the output end of the reducer 12 is connected to the input end of the drive pulley 8. The drive pulley 8 and the first double-position pulley 14 are connected by a transmission belt 16, and the first double-position pulley 14 and the second double-position pulley 15 are connected by a transmission belt 16. The upper and lower rotating shafts 7 are connected by a transmission belt 16. The outer walls of the upper and lower rotating shafts 7 are equipped with first spiral conveyor blades 9, and the outer walls of the middle rotating shaft 7 are equipped with second spiral conveyor blades 10. The interior of the rotating shaft 7 is hollow, and the right end of the rotating shaft 7 is rotatably connected to the inner wall of the right side of the drying box 1. Multiple second heating rods 18 pass through the right side wall of the drying box 1 and are located inside the rotating shaft 7. The second heating rods 18 are electrically connected to the temperature controller 6. Locking screws are provided at both ends of the protective cover 17, and locking screw holes are provided on the left side wall of the drying box 1.

[0019] Biomass fuel is added to the feeding hopper 22. The servo motor 25 is started to drive the conveyor shaft 23 to rotate. The conveyor shaft 23 drives the spiral conveyor blades 24 to rotate, pushing the biomass fuel towards both ends of the feeding cylinder 20. It is continuously and quantitatively added into the drying chamber 1 through the feed inlet to avoid excessive feeding at one time, which would affect the drying effect. After entering the drying chamber 1, the biomass fuel falls onto the surface of the drying plate 3. The temperature controller 6 controls the heating plate 4 and heating rod 5 to raise the temperature and dry the biomass fuel. The biomass fuel is circulated and heated on multiple drying plates 3 through the discharge and second discharge ports to ensure the uniformity of drying. The drive motor 13 is started to drive the drive wheel 8 to rotate through the reducer 12. The drive wheel 8 drives multiple rotating shafts 7 to rotate synchronously via the first double-position pulley 14, the second double-position pulley 15, and the transmission belt 16. This causes the rotating shafts 7 to drive the first spiral conveyor blades 9 and the second spiral conveyor blades 10 to rotate, pushing the biomass fuel and making it circulate, ensuring the uniformity of drying and improving the drying quality. The second heating rod 18 is activated to heat the rotating shafts 7, thereby drying the biomass fuel during the conveying process and further improving the drying quality. The protective cover 17 is installed on the left side wall of the drying box 1 by locking screws and locking screw holes to protect the first double-position pulley 14, the second double-position pulley 15, and the transmission belt 16 and ensure safety.

[0020] like Figures 1 to 5 As shown, this utility model discloses a biomass power plant fuel dryer. During operation, biomass fuel is added to the feeding hopper 22. A servo motor 25 is started, driving the conveyor shaft 23 to rotate. The conveyor shaft 23 drives the spiral conveyor blades 24 to rotate, pushing the biomass fuel towards both ends of the feeding cylinder 20. The fuel is continuously and quantitatively added into the drying chamber 1 through the feed inlet. After entering the drying chamber 1, the biomass fuel falls onto the surface of the drying plate 3. A temperature controller 6 controls the heating plate 4 and heating rod 5 to raise the temperature, drying the biomass fuel. The drive motor 13 is started, and the reducer 1... 2 drives the drive wheel 8 to rotate. The drive wheel 8 drives multiple rotating shafts 7 to rotate synchronously through the first double-position pulley 14, the second double-position pulley 15 and the transmission belt 16. This causes the rotating shafts 7 to drive the first spiral conveyor blade 9 and the second spiral conveyor blade 10 to rotate, pushing the biomass fuel. The biomass fuel is circulated and heated on multiple drying plates 3 through the discharge port and the second discharge port. The second heating rod 18 is activated to raise the temperature and heat the rotating shaft 7, thereby drying the biomass fuel during the conveying process. The dried biomass fuel is discharged from the drying box 1 through the discharge pipe 19.

[0021] The heating plate 4, heating rod 5, temperature controller 6, reducer 12, drive motor 13, second heating rod 18 and servo motor 25 of the biomass power plant fuel dryer of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0022] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A biomass power plant fuel dryer, characterized in that, It includes a drying box (1), multiple support legs (2), a discharge pipe (19), a feeding assembly, a heating assembly and a conveying assembly. Support legs (2) are installed at the four corners of the bottom of the drying box (1), a discharge pipe (19) is installed on the right side of the bottom of the drying box (1), a feeding assembly is installed on the left side of the top of the drying box (1), a heating assembly is installed inside the drying box (1), and a conveying assembly is installed above the heating assembly.

2. A biomass power plant fuel dryer as described in claim 1, characterized in that, The feeding assembly includes a feeding cylinder (20), a connecting seat (21), a feeding hopper (22), a conveying shaft (23), two spiral conveying blades (24), and a servo motor (25). The connecting seat (21) is installed on the top left of the drying box (1). The feeding cylinder (20) is installed on the top of the connecting seat (21). The connecting seat (21) has symmetrical feed ports on the front and rear sides. The feeding hopper (22) is installed at the top feed end of the feeding cylinder (20). The conveying shaft (23) is rotatably installed inside the feeding cylinder (20). The input end of the conveying shaft (23) is connected to the output end of the servo motor (25). Spiral conveying blades (24) are symmetrically installed on the outer wall of the conveying shaft (23).

3. A biomass power plant fuel dryer as described in claim 1, characterized in that, The heating assembly includes multiple drying plates (3), multiple heating plates (4), two sets of heating rods (5) and a temperature controller (6). Multiple drying plates (3) are evenly arranged inside the drying box (1). The middle part of the drying plate (3) is cylindrical, and the heating plate (4) is installed inside the drying plate (3). Heating rods (5) are installed at the front and rear ends of the bottom of the drying plate (3). The temperature controller (6) is installed on the right side wall of the drying box (1). The upper drying plate (3) has a discharge port on the right end, the middle drying plate (3) has a second discharge port on the left end, and the bottom drying plate (3) is connected to the input end of the discharge pipe (19) on the right end.

4. A biomass power plant fuel dryer as described in claim 3, characterized in that, The conveying assembly includes multiple rotating shafts (7), a drive wheel (8), two first spiral conveying blades (9), a second spiral conveying blade (10), a fixed plate (11), a reducer (12), a drive motor (13), a first double-position pulley (14), a second double-position pulley (15), and multiple transmission belts (16). The multiple rotating shafts (7) are rotatably mounted in the middle of the drying plate (3). The drive wheel (8) is mounted on the left end of the upper rotating shaft (7), and the first double-position pulley (14) and the second double-position pulley (15) are mounted on the right end of the lower rotating shaft (7). The reducer (12) is connected to the fixed plate. (11) Installed on the left side wall of the drying box (1), the input end of the reducer (12) is connected to the output end of the drive motor (13), the output end of the reducer (12) is connected to the input end of the drive wheel (8), the drive wheel (8) and the first double-position pulley (14) are connected by a transmission belt (16), the first double-position pulley (14) and the second double-position pulley (15) are connected by a transmission belt (16), the outer walls of the upper and lower rotating shafts (7) are equipped with the first spiral conveying blade (9), and the outer wall of the middle rotating shaft (7) is equipped with the second spiral conveying blade (10).

5. A biomass power plant fuel dryer as described in claim 4, characterized in that, It also includes multiple second heating rods (18), the inside of the rotating shaft (7) is hollow, and the right end of the rotating shaft (7) is rotatably connected to the right inner wall of the drying box (1). Multiple second heating rods (18) pass through the right side wall of the drying box (1) and are located inside the rotating shaft (7). The second heating rods (18) are electrically connected to the temperature controller (6).

6. A biomass power plant fuel dryer as described in claim 4, characterized in that, It also includes a protective cover (17), with locking screws at both ends of the protective cover (17) and locking screw holes on the left side wall of the drying oven (1).

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